We will measure your VO2max at 16,000ft

Male subjects needed for research on how breathing training affects performance at high altitude.

This is a study for US Special Forces, so at this time we are recruiting male subjects who are:

• 18 – 45 years old, not overweight, non-smokers• Healthy, not on any regular medications, able to ride a stationary bike for up to 2 hours• Not suffering from migraine headaches, anemia or sickle cell disease• Willing to not go to the mountains (higher altitudes) for the duration of the study (6 weeks)• Able to commit to up to 6 hours per week for exercise and breathing training for 4 weeks The total time commitment is for up to 48 hours over the course of 6-8 weeks. Part of the study will be at a simulated altitude of 16,000 feet in a hypobaric chamber.We will measure your VO2 max (peak oxygen uptake) twice at Denver altitude and twice at 16,000 feet.• You will recieve these results once the study has been completed.